This museum in Philadelphia has a great website with lots of educational resources. The interactive constitution lets you read articles and amendments alongside commentary from different historic and legal experts. There is also a collection of videos and lesson plans, and a few other interactive activities and games, plus primary source documents and even some craft ideas.
Tuesday Language Arts
This company provides books and activities for developing vocabulary.
This is a small mom-owned company that provides science resources.
Thursday History/Social Studies
This British site has resources for history learning at jr. high and high school levels.
Learn computer science through game design with this online visual programming platform.
Saturday Grab Bag
Printable curriculum materials for preschool through second grade levels.
This site gives instant, step by step solutions to math problems.